Search  for anything...
Rinnai

Rinnai RWM200 WiFi Control Module for Tankless Water Heater, Black, Smart Phone Control, Indoor Installation

  • Based on 58 reviews
Condition: New
Checking for the best price...
$134.86 Why this price?

Buy Now, Pay Later

As low as $22.48 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 8 left in stock, order soon!
Fulfilled by 🚛 Supply Online 🚛
Arrives Wednesday, Sep 23
Order within 8 hours and 21 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Features

  • SMART CONNECTIVITY: Enables wireless control of your Rinnai tankless water heater through a smartphone app, allowing remote temperature adjustments and monitoring
  • EASY INSTALLATION: Features a simple two-wire interface that quickly connects to your Wi-Fi network, compatible with specifically equipped Rinnai tankless water heaters
  • FLEXIBLE PLACEMENT: Can be installed up to 300 feet away from the water heater when Wi-Fi signal is weak, designed for indoor installation but works with outdoor heaters
  • MONITORING FEATURES: Tracks energy usage, enables schedule setting, and provides important system alerts directly to your mobile device
  • MOBILE CONTROL: Works with the Rinnai Control-R mobile app to provide comprehensive control of water temperature settings and heater functions from your phone or tablet

Description

Transform your Rinnai tankless water heater into a smart device with the RWM200 WiFi Control Module. This innovative controller connects your water heater to your smartphone, giving you complete control at your fingertips. Through the Rinnai Control-R mobile app, you can remotely adjust temperature settings, monitor energy usage, create custom schedules, and receive important system notifications. Installation is straightforward with a two-wire interface that connects to your home's WiFi network. For homes with weak WiFi signals, the module can be installed up to 300 feet away from the water heater while maintaining connectivity. While the module itself requires indoor installation, it's compatible with both indoor and outdoor water heater units. The RWM200 brings modern convenience to water heating, allowing you to manage your system from anywhere through your smartphone or tablet. Perfect for homeowners who want to optimize their water heating efficiency and enjoy the convenience of smart home technology.

Brand: Rinnai


Special Feature: Smart Control, Remote Monitoring


Color: Black


Voltage: 12 volts


Material: Metal, Plastic


Special Features: Smart Control, Remote Monitoring


Voltage: 12 volts


Mount Type: Wall


Item Weight: 8 ounces


Material Type: Metal, Plastic


Color: Black


Style Name: Tankless


Brand Name: Rinnai


Model Number: RWM200


Number of Items: 1


Unit Count: 1 Count


Manufacturer: Rinnai


UPC: 766156017476


Included Components: Wifi Control Module, Mounting Hardware, Installation Manual


Manufacturer Part Number: Rwm200


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Sep 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Cool tool
Absolutely required if you want to monitor and in some case control the Rinnai remotely!
Reviewed in the United States on March 28, 2026 by David Brubaker
    • WiFi Control of every feature.
This lets me control everything from my phone. I wish it was built in, but this will give you full control of your water heater.
Reviewed in the United States on August 27, 2026 by Timothy M. Touchette
    • Once I Factory Reset….worked like a charm!
Worked like a charm. You may need to factory reset the device to get it setup, but after that it worked great!
Reviewed in the United States on June 8, 2026 by Spotsygamer
    • Do not buy under any circumstance
I would give 0 stars if I could. The entire selling point of this device is that it will allow you to have more control over when water is heated and when recirculation runs. Keep in mind that I am quite technically versed. I tried all kinds of different settings that you can change from the internals of the water heater. Nothing allowed either remote module to let me explicitly start heating water. You can often get water to recirculate, but it is usually cold. Without this module, the Rinnai Sensei provides a "SmartCirc" auto heating/circulation and on demand for both. That results in, once in a while, hot water being available when you turn on the tap. With this module installed nothing works anymore. I set up a smart schedule. I set the water temp. I tried running the recirc pump. Any one of those settings might or might not apply and do something. Most of the time, a light will flash on the RWM200 indicating that a remote command was received, and then the water heater sits there doing nothing at all. I also have a Home Assistant instance and tried tying this into it to see if it worked better than the mobile app. It does not. The fault lies entirely with this device. That alone is a dealbreaker, but it is actually even worse! The entire remote control depends on cloud services. One would think that if that service were down, then the water heater would revert back to using its internal SmartCirc. Instead, the heater simply won't operate in any capacity. You may think that's not a big deal, but their servers go down at least once a week during normal hours. Moreover, this is actually a flaw with the water heater itself even more than the module. Attempting to resolve all these issues using an outdated RWM101 revealed that controller has the exact same problems. Even though it has a local non-cloud mode, compared to the worthless RWM200 which is cloud only, the pump itself doesn't strictly listen to what the remote module requests. At best, it hears the requests as suggestions and more often than not discards what you asked for. Without this module installed, water will at the very least heat on demand, which is better than nothing. This is an offensive device that shouldn't be allowed to be sold to the general public. ... show more
Reviewed in the United States on March 27, 2026 by Lofty Snowman
    • Quality
Looks good installing it next week
Reviewed in the United States on July 2, 2026 by Alan De Tore
    • Better than the Control-R
Much better than the old Control-R unit. It connected in seconds and I was able to get connected in just a few more minutes by simply cycling my Android's power. Still think that Rinnai has a high school class writing their code as clunky as it performs but it's working and that's all I need.
Reviewed in the United States on December 3, 2025 by T. White
    • Next Gen is far easier to connect than previous.
Sets up over Bluetooth, once connected and added to the account you can control the temperature and recirculation of your water. Happy I switched to this newer version.
Reviewed in the United States on August 10, 2026 by thephillylawyer
    • WiFi Connection to Tankless Rinnai
This was easily connected to my outdoor tankless to control via the Rinnai app. I did have to run a longer cable but that was easy using shrink wrap.
Reviewed in the United States on July 6, 2026 by R. Blazer

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...